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प्रश्न
Explain the progress of ecological succession in newly formed volcanic island.
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उत्तर
- Primary succession starts at places where no living organisms were present before like a newly formed volcanic island.
- Before a biotic community of diverse organisms can be established, there must be soil. Depending mostly on climate, it takes natural processes, several hundred to several thousand years to produce fertile soil on bare rock.
- The species which invade a bare area and initiate the succession are called pioneer species. Crustose lichen grows on the rocks which secretes acid to dissolve rock. This helps in weathering of rocks and formation of soil.
- These conditions become favourable for the next community i.e. bryophytes and mosses take hold of the small amount of soil.
संबंधित प्रश्न
Which is the last stabilised community in a plant succession?
Identify the stage that is common to both hydrarch and xerarch succession.
Identify the stage that follows xerarch succession.
______ is where secondary succession takes place.
In xerarch succession which one of the following brings about initial weathering of rocks to form soil?
Transformation of a region from a pool of water to swamp then to marsh and then to mesic condition is an example of ____________.
Primary successions the development of communities on ______.
Pioneers are ______.
Explain the following term with reference to ecological succession.
Seral stages
Which one of the following does not evolve further?
